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A quantum circuit design of AES requiring fewer quantum qubits and gate operations

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Frontiers of physics 2022年第4期17卷 99-105页

作者： ze-guo Wang Shi-Jie Wei Gui-Lu Long State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China Beijing Academy of Quantum Information Sciences Beijing 100193China Beijing National Research Center for Information Science and Technology and School of Information Tsinghua University Beijing 100084China Frontier Science Center for Quantum Information Beijing 100084China

Advanced Encryption Standard(AES)is one of the most widely used block ciphers nowadays,and has been established as an encryption standard in *** we design AES-128 and the sample-AES(S-AES)quantum circuits for *** the quantum circuit of AES-128,we perform an affine transformation for the SubBytes part to solve the problem that the initial state of the output qubits in SubBytes is not the|0⟩⊗8 *** that,we are able to encode the new round sub-key on the qubits encoding the previous round sub-key,and this improvement reduces the number of qubits used by 224 compared with Langenberg et al.’s *** S-AES,a complete quantum circuit is presented with only 48 qubits,which is already within the reach of existing noisy intermediate-scale quantum computers.

关键词： AES S-AES quantum circuit quantum attack

Investigation on the plastic work-heat conversion coefficient of 7075-T651 aluminum alloy during an impact process based on infrared temperature measurement technology

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Acta Mechanica Sinica 2018年第2期34卷 327-333页

作者： Tong Zhang ze-Rong guo Fu-Ping Yuan Hu-Sheng Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences

The plastic work-heat conversion coefficient is one key parameter for studying the work-heat conversion under dynamic deformation of materials. To explore this coefficient of 7075-T651 aluminum alloy under dynamic compression, dynamic compression experiments using the Hopkinson bar under four groups of strain rates were conducted, and the temperature signals were measured by constructing a transient infrared temperature measurement system. According to stress versus strain data as well as the corresponding temperature data obtained through the experiments, the influences of the strain and the strain rate on the coefficient of plastic work converted to heat were *** experimental results show that the coefficient of plastic work converted to heat of 7075-T651 aluminum alloy is not a constant at the range of 0.85–1 and is closely related to the strain and the strain rate. The change of internal structure of material under high strain rate reduces its energy storage capacity, and makes almost all plastic work convert into heat.

关键词： Plastic work-heat conversion coefficient Infrared temperature measurement Dynamic compression 7075-T651 Aluminum alloy

Historical development of karst evergreen broadleaved forests in East Asia has shaped the evolution of a hemiparasitic genus Brandisia(Orobanchaceae)

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Plant Diversity 2023年第5期45卷 501-512页

作者： Zhe Chen Zhuo Zhou ze-Min guo Truong Van Do Hang Sun Yang Niu CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of Sciences132 Lanhei RoadKunming 650201YunnanChina University of Chinese Academy of Sciences Beijing 100049China Vietnam National Museum of Nature Vietnam Academy of Science and Technology18 Hoang Quoc VietCau Giay 10000HanoiVietnam Graduate University of Science and Technology Vietnam Academy of Science and Technology18 Hoang Quoc VietCau Giay 10000HanoiVietnam

Brandisia is a shrubby genus of about eight species distributed basically in East Asian evergreen broadleaved forests(EBLFs),with distribution centers in the karst regions of Yunnan,Guizhou,and Guangxi in southwestern *** on the hemiparasitic and more or less liana habits of this genus,we hypothesized that its evolution and distribution were shaped by the development of EBLFs *** test our hypothesis,the most comprehensive phylogenies of Brandisia hitherto were constructed based on plastome and nuclear loci(nrDNA,PHYA and PHYB);then divergence time and ancestral areas were inferred using the combined nuclear loci *** analyses reconfirmed that Brandisia is a member of Orobanchaceae,with unstable placements caused by nuclear-plastid *** Brandisia,three major clades were well supported,corresponding to the three subgenera based on *** was inferred to have originated in the early Oligocene(32.69 Mya)in the Eastern Himalayas-SW China,followed by diversification in the early Miocene(19.45 Mya)in karst *** differentiation dates of Brandisia were consistent with the origin of keystone species of EBLFs in this region(e.g.,Fagaceae,Lauraceae,Theaceae,and Magnoliaceae)and the colonization of other characteristic groups(e.g.,Gesneriaceae and Mahonia).These findings indicate that the distribution and evolution of Brandisia were facilitated by the rise of the karst EBLFs in East *** addition,the woody and parasitic habits,and pollination characteristics of Brandisia may also be the important factors affecting its speciation and dispersal.

关键词： Biogeography Brandisia Evergreen broadleaved forests(EBLFs) Karst Orobanchaceae Phylogeny

Effect of nucleating agents on the electrical properties of cross-linked polyethylene under tensile stress

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High Voltage 2024年第2期9卷 429-439页

作者： Yunqi Xing Jiahao Liu Jingang Su Junwei Zha guochang Li ze guo Xiaozhen Zhao Mengjia Feng State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of TechnologyTianjinChina Electric Power Research Institute of State Grid Hebei Electric Power Supply Co. Ltd.ShijiazhuangChina Beijing Advanced Innovation Center for Materials Genome Engineering School of Chemistry and Biological EngineeringUniversity of Science&Technology BeijingBeijingChina Institute of Advanced Electrical Materials Qingdao University of Science and TechnologyQingdaoChina

During the operation of high-voltage cables,external stress and residual stress can affect the aggregated structure of insulating materials and lead to significant deterioration in their electrical *** investigate the evolution characteristics of the electrical properties of cross-linked polyethylene(XLPE)under mechanical stress,this paper ex-plains the relationship between the aggregated structure of XLPE and its electrical properties and proposes a method for improving insulation performance under me-chanical *** results show that metallocene polyethylene used as a nucleating agent can promote crystallisation through heterogeneous nucleation and increase Young's modulus by non-uniform nucleation,increasing crystallinity and reducing interplanar spacing,resulting in more complete crystal forms and reduced damage to the aggregated structure during the tensile *** nucleating agent modification,the XLPE crystallisation becomes more uniform,and interfacial adhesion forces *** weakened interface damage process between the amorphous and crystalline regions under tensile stress effectively inhibits the process of molecular chain polarisation turning and reduces trap *** modified XLPE crystal structure shows a tendency towards densification and enhanced molecular chain interactions,which can reduce the damage to the aggregated structure under tensile stress,while the reduced free volume inside the material and the shortened average free path of carriers can weaken the damage of high-energy electrons to molecular chains,thereby inhibiting the process of electrical tree *** results show that nucleating agents have great potential for maintaining the stable operation of XLPE cables under mechanical stress.

关键词： stress electrical damage

Inflammatory myofibroblastic tumor of the central nervous system:A case report

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World Journal of Clinical Cases 2022年第34期10卷 12637-12647页

作者： Zhen-Jin Su ze-Shang guo Heng-Tong Wan Xin-Yu Hong Department of Neurosurgical Oncology The First Hospital of Jilin UniversityChangchun 130000Jilin ProvinceChina

BACKGROUND An inflammatory myofibroblastic tumor(IMT)occurring in the central nervous system is very rare,and thus its pathogenesis is *** case report and literature review aimed to explore the pathogenesis,clinical features,imaging findings,pathological characteristics,immunohistochemical characteristics,diagnoses,treatments,and risks of postoperative recurrence of IMT in the central nervous *** SUMMARY A 67-year-old woman was admitted to the hospital with an exophthalmic protrusion and double vision in the left eye that had persisted for 3 *** resonance imaging(MRI)showed a 2.4 cm×1.3 cm heterogeneous large mass in the bottom of the left anterior cranial fossa,which was closely related to the dura *** surgery,we suspected the mass to be *** entire mass was successfully removed under neuronavigation and electrophysiological monitoring,and postoperative pathology indicated an IMT with extensive infiltration of chronic inflammatory cells and scattered multinucleated giant *** MRI at the 3-mo follow-up showed that the tumor at the bottom of left anterior cranial fossa had been completely resected without *** From the histological,immunohistochemical,and genetic analyses,the present case suggests that the pathogenesis of IMT-CNS is related to autoimmunity.

关键词： Inflammatory myofibroblastic tumor Central nervous system Pathogeny Diagnosis Treatment Risk of postoperative recurrence Case report

Hybrid improper ferroelectricity and phase transition behavior of Li_(2)Nd_(2)Ti_(3)O_(10)ceramics with A-site ordered triple-layer Ruddlesden-Popper structure

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Journal of Materiomics 2024年第1期10卷 145-153页

作者： Bi Hui Zhang Diming Xu Rui ze guo Lu Liu Xiao Qiang Liu Xiang Ming Chen Laboratory of Dielectric Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China Key Laboratory of Multifunctional Materials and Structures Ministry of EducationSchool of Electronic Science and EngineeringXi'an Jiaotong UniversityXi'an710049China

Hybrid improper ferroelectricity has been extensively reported through theoretical prediction and experimental investigation in the oxides with Ruddlesden-Popper(R-P)***,the experimentally reported ferroelectric materials based on triple-layer R-P structures are rare,and the weak ferroelectricity impedes its practical *** the present work,the single-phase Li_(2)Nd_(2)Ti_(3)O_(10)ceramics with A-site cation ordered triple-layer R-P structure was obtained by spark plasma sintering technique,and the crystal structure of P2_(1)ab symmetry was revealed by neutron powder diffraction and transmission electron microscope ***,the switchable ferroelectricity in Li_(2)Nd_(2)Ti_(3)O_(10)ceramics has been observed at room temperature,and the saturated polarization-electric field hysteresis loop was obtained with P_(r)=0.4μC/cm^(2)under the electric field of 250 kV/*** phase transition behavior of Li_(2)Nd_(2)Ti_(3)O_(10)oxides was revealed by the temperature-dependence Raman and dielectric spectra combined with the piezoelectric property.

关键词： Hybrid improper ferroelectricity A-site ordered Ruddlesden-Popper structure Phase transition behavior

Treatment of Breast Cancer Accompanied by POEMS Syndrome:A Case Report

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Chinese Medical Sciences Journal 2016年第1期31卷 59-61页

作者： Jian-yu Dong Yan Yan Min-feng Liu Zhao-ze guo Jing-yun guo Chang-sheng Ye Breast Center Nanfang HospitalSouthern Medical University

POLYNEUROPATHY, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes （POEMS） syndrome is a rare paraneoplastic syndrome characterized by the presence of a monoclonal plasma cell disorder, peripheral neuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and typical skin abnormalities. The cause of POEMS syndrome is unknown.1 Although numerous cases with POEMS syndrome have been reported, the POEMS syndrome patients with malignant tumor were seldom reported. Here, we present a rare case with breast cancer accompanied by POEMS syndrome.

关键词： polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes syndrome breast cancer

Synthesis of magnetic carrier sub-microparticles with high stability through carbon reduction and solation coating methods

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Rare Metals 2016年第11期35卷 870-873页

作者： Qiang Zhang Li-Bo Gao Jun-Yang Li ze-Bin guo Zhen-Yin Hai Yan-Ting Xing Chen-Yang Xue National Key Laboratory for Electronic Measurement Technology North University of China Science and Technology on Electronic Test & Measurement Laboratory North University of China

This paper presents a novel approach in synthesizing SiO_2-Fe_3O_4magnetic carrier with high *** Fe_3O_4 magnetic powders were synthesized via onestep method named carbon reduction method. The advantages of the methods are of simple process, none lead-in pollution agent, low cost and adaptation to large-lot production. The stability of the magnetic powders is improved through modifying the Fe_3O_4 with SiO_2 in solation *** results of the characterizations show that the superparamagnetic SiO_2-Fe_3O_4sub-microparticles（~600 nm）with saturation intensity of 36.4 m A·m^2·g^（-1）are obtained successfully. Moreover, the quantitating, repeatability and high stability of the carbon reduction method are demonstrated as well.

关键词： Carbon reduction method Superparamagnetic Fe304-SiO2

Influence of Tb on easy magnetization direction and magnetostriction of PrFe1.9 alloy

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Chinese Physics B 2019年第11期28卷 333-338页

作者： Chang-Xuan He Yan-Mei Tang Xiang Li Yun He Cai-Yan Lu ze-Ping guo College of Physics and Technology Guangxi Normal UniversityGuilin 541004China School of Electronic Engineering and Automation Guilin University of Electronic TechnologyGuilin 541004China

The crystal structures, magnetization, and spontaneous magnetostriction of ferromagnetic Laves phase Pr1-xTbxFe1.9 compounds are investigated in a temperature range between 5 K and 300 K. High resolution synchrotron x-ray diffraction(XRD) analysis shows that different proportions of Tb in Pr1-xTbxFe1.9 alloys can result in different easy magnetization directions(EMD) below 70 K, i.e., [100] with x = 0.0, and [111] with x ≥ 0.1. This indicates Tb substitution can lead the EMD to change from [100] to [111] with x rising from 0.0 up to 0.1. The Tb substitution for Pr reduces the saturation magnetization Ms and the magnetostriction to their minimum value when x = 0.6, but it can increase low-field(0 ≤ H ≤9 kOe, the unit 1 Oe = 79.5775 A·m-1) magnetostriction when x = 0.8 and 1.0 at 5 K. This can be attributed to the larger magnetostriction of PrFe1.9 than that of TbFe1.9, as well as the decrease of the resulting anisotropy due to Tb substitution at low temperatures.

关键词： Tb substitution spin reorientation magnetostriction easy magnetization direction(EMD)